For the highest performance, optimized fan blades, especially for heat sinks designed radiator corners and a speed switch with 3 selectable speed options, Silent Wings Pro 4 140mm PWM is the most progressive, performant, and versatile fan by be quiet!
| Suitable location | Computer case |
| Type | Fan |
| Fan diameter | 14 cm |
| Rotational speed (max) | 2400 RPM |
| Noise level (high speed) | 36.8 dB |
| Maximum airflow | 97.41 cfm |
| Airflow | 165.5 m³/h |
| Maximum air pressure | 3.64 mmH2O |
| Pulse-width modulation (PWM) support | Yes |
| Bearing type | Fluid Dynamic Bearing (FDB) |
| Quantity per pack | 1 pc(s) |
| Mean time between failures (MTBF) | 300000 h |
| Product colour | Black |
| Fan connector | 4-pin |
| Certification | CE / ROHS / RU / UKCA / TÜV / WEEE |
| Power consumption (typical) | 6 W |
| Voltage | 7 - 13.2 V |
| Rated voltage | 12 V |
| Rated current | 0.5 A |
| Maximum current | 0.5 A |
| Width | 140 mm |
| Depth | 140 mm |
| Height | 25 mm |
| Weight | 258 g |
| Fan dimensions (W x D x H) | 140 x 140 x 25 mm |
| Cable length | 0.5 m |
| Package width | 156 mm |
| Package depth | 206.5 mm |
| Package height | 31 mm |
| Package weight | 448 g |
| Screws included | Yes |
| Number of screws | 4 |
| Number of clips | 4 |
| Country of origin | Germany |
| Harmonized System (HS) code | 84733080 |
| Products per shipping (inner) case | 32 pc(s) |
| Shipping (inner) case width | 31.7 cm |
| Shipping (inner) case length | 46.3 cm |
| Shipping (inner) case height | 38.8 cm |
| Shipping (inner) case gross weight | 15.5 kg |